The roles of competition and habitat in the dynamics of populations and species distributions

Charles B. Yackulic, Janice Reid, James D. Nichols, James E. Hines, Raymond Davis & Eric Forsman
The role of competition in structuring biotic communities at fine spatial scales is well known from detailed process-based studies. Our understanding of competition's importance at broader scales is less resolved and mainly based on static species distribution maps. Here, we bridge this gap by examining the joint occupancy dynamics of an invading species (Barred Owl, Strix varia) and a resident species (Northern Spotted Owl, Strix occidentalis caurina) in a 1000-km2 study area over a 22-year...
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